Question: g. find the standard deviation h. Find the appropriate process capability index for the process if the lower and upper specification limits are 8 to
g. find the standard deviation
h. Find the appropriate process capability index for the process if the lower and upper specification limits are 8 to 20."
i. What is your interpretation of the capability index?
| Sample # | Obs.1 | Obs.2 | Obs.3 | Obs.4 | Obs.5 | x | R |
| 1 | 15 | 17 | 16 | 17 | 14 | ||
| 2 | 16 | 16 | 9 | 14 | 15 | ||
| 3 | 17 | 17 | 15 | 15 | 14 | ||
| 4 | 18 | 15 | 16 | 16 | 16 | ||
| 5 | 13 | 15 | 17 | 16 | 19 | ||
| 6 | 10 | 15 | 11 | 17 | 18 | ||
| 7 | 15 | 15 | 14 | 14 | 16 | ||
| 8 | 14 | 13 | 12 | 15 | 14 | ||
| 9 | 15 | 18 | 18 | 12 | 10 | ||
| 10 | 12 | 12 | 15 | 15 | 16 |
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